Paper-cutting machine.



N. GRAY, JR. PAPER CUTTING MACHINE. APPLICATION FILED 1313.6, 1911.

1,058,964. Patented Apr.15,1913.

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N. GRAY, JR. PAPER CUTTING MACHINE.

APPLICATION FILED 11:13.15, 1911 1,058,964, Patented Apr. 15, 1918.

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Patented Apr. 15, 1913.

N. GRAY, JB. PAPER CUTTING MACHINE. APPLIOATION FILED uns, 1911,

WIT/758858 N. GRAY, Jn. PAPER CUTTING MACHINE. APPLIUATION FILED 1113.6, 1911.

Patented Apr. 15, 1913.

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PAPER CUTTING MACHINE.

APPLICATION FILED Imm, 1911.

1,058,964. Patented Apr. 15, 1913.

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UNITED sTATEs PATENT OFFICE.'I

NIEL GRAY, JR., 0F DSWEGO, NEW YORK.

APEiaCUTTING MACHINE.

To all whom z't may concern.'

Be it known that I, NIEL GRAY, Jr., a citizen of the United States, residing at Oswego, in the county of Oswego'and State of New York, have invented new and useful Improvements in Paper-Cutting Machines, of which the following is a specification.

My invention relates to paper cutting machines and )consists in a machine of improved construction and mode of operation and which is particularly designed to permit of an interchangeability and adjustment of the parts so that it can be utilized for the cutting of a wide range ofl work.

Important features of my invention are means to lower the clamp onto the work to cooperate with the knife during the cutting operationand operative to accomplish this initial lowering of the clamp onto the Work quickly, that an effective clamping pressure may be applied thereon before the knife begins its cut and to Arelease the pile only after the knife has begun to rise, thus to prevent rippling of the sheets; a pressure device operating on the clamp to produce a clamping pressure on the work during the cutting; means coiiveniently'to change the stroke of the knife whereby the machine may perform f the function of both a shear and a vertical stroke machine, thus greatly increasing its,l utility with a corresponding saving to the.

user as it will be understood that the needs of comparatively few concerns warrant the A continued use of a vertical stroke machine,

the vertical stroke being used for fancy cuts only, such as pinking, serrating, etc.;-

a gage for the pile adjustable in both a horizontal and vertical plane accurately to gage the pile being cut and formed to permit the offsetting of apart of the gage for the convenienty cutting of small pamphlets `or cards; a particular clamping element providing a. clamping surface to coincide with the cutting edge of the knife in the cutting of tabs and the like, tlie portion of the clamp conforming to the tab or offset portion of the knife cutting edge being made detachable so as readily to permit of changing the outline of the clamp to conform to various sizes of tabs and to permit of the usual shear stroke and an adjustable throw out cam automatically to disengage the clutch of the machine'at the end of each knife stroke. These and other features of my invention Specification of Letters Patent. Patented Apr. 15, 1913. Application tiled February 8, 1911.

' Serial No. 606,705.

are shown in the accompanying drawing in which- Figure 1 is a front elevation of a desirable embodiment of my invention; Fig. 2 is aside elevation thereof; Fig. 3 is a crosssectional View taken on line 3-3 of Fig. 1; Fig. 4 is a partial front elevation of a portion .of a machine embodying a feature of my invention. front elevations showing the adjustable guides of my invention respectively in position for shear and vertical strokes. is a partial plan view of the clamp lowering mechanism of my invention partially in section. Figs. 8 to 12 illustrate the improved gage of my invention and are respectively Fig. 8, a plan view thereof, Fig. 9 a longitudin'al sectional view on line 9-9 of Fig. 8; Fig. 10 a cross section on line 10-10 of Fig. 8; Fig. 11 an end elevation and Fig. 12 a rear elevation thereof; Fig. 13 isa cross sectional view of the improved clamping element of my invention as employed inthe cutting of tabs; Fig. 14 is an enlarged horizontal sect-i011 thereof taken on line 14-14 of Fig. 13; Fig. 15 is a front elevation of the clamp tab-piece detached; Fig. 16 is a modified form of clamp for the cutting of tabs; Fig. 17 is an enlarged vert-ical sectional view of the knife guide of my invention as employed to produce a vertical stroke, and Figs. 18 and 19 are respectively a side ele vation and sectional plan view of the clutch disenvaging mechanism.

Figs. 5 and 6 are partial Fig. 7

Re erring to the drawings, in which the with the right and left leg st-andards l and 2 secured at their lower ends by the usual cross-rods 3 and provided respectively` with the uprights 4t and 5. The uprights have their front faces arranged to form conjointly with the rear faces of guide-way bars 6 6, suitable slideways for the usual knife' stock 7. The knife-stock, carrying the knife 10, is arranged to reciprocate in the slideway so formed and is carried and operated by the .pitman connections 11-12 attached to the f ends of the knife-stock and lconnected at their lower ends respectively to the cranks 141-1? on the opposite ends of the driveshaft 6, which drive-shaft is journaled in the opposite standards.

As best shown-in Figs. 2 and 19 ower, is communicated to the drive-shaft rom the power-shaft 18, by the engagement of the small gear 20, fixed on the power-shaft with 5 the gear 21 on intermediate shaft 22 to which is also secured the gear 23 meshing with the driving-gear 24 fixed on the driveshaft 16. Said power shaft 18 and intermediate shaft 2 2 are shown similarly journalefad in the standards parallel to the drivesha t.

The pile to becut is placed onto the table 26 against the adjustable back gage G arranged at the rear of the knife and operated for the positioning or gaging of the pile, as here shown, by manipulation of the handwheel'30 suitablyjourna-led to the front of the machine beneath the table and having secured thereto the pulley 32 upon which the cable 33 is wound, said cable being carried rearwardly over the rear pulley 35 and connected intermediate of the pulleys to lug 36 affixed to the gage under portion and depending through a central table slot 38.

(Figs.` 2 and 9.)

An important feature of this invention whereby the stroke of the machine may, at will, be made suitable for any style of cutting is shown in Figs. 1 to 6. A desirable manner to accomplish such change is to substitute for the usual knifeguide-bar as shown in Fig. 4 for a shearing stroke, the guide-bar as shown in Fig. l for vertical stroke which may be easily accomplished by loosenin of the guide-bar securing bolts 40; and emp oying therewith vertically' to guide the knife, the to either end o the knife-stock 7 outside of the guide bars. For this purpose the ver- 'tical stroke guide-bars are provided with verticalV facings 43 on their outer sides to afford bearings for the guide-brackets which are preferably formed as best shown in Fig. 17, having a socket 46 for the reception of a hardened steel gib-piece 47 to bear against the facings 43 4and with an adjusting setscrew 50 to engage said gib-piece to take up any wear or ooseness. Customarily only one of the knife bar guides, preferably the one at the left hand side of the machine, is employed to produce the desired shear` stroke. The shear stroke guide as shown in Fig. 4 isformed with an inclined guide slot 52 to receive the guide block 53 to slide therein; said block being provided with a rearwardly extending pin 55 fitted to a hole 1n the knife stock 7, whereby the knife when pulled down bv the cranks 14-'-15 will be guided by said block to produce the draw or shear cut, thus to change the angle of the knife stroke, all that is required is to chan e the angle of the inclined slot in one gui, e

onlIy. p y

n Figs. 5 and 6 I have .shown the lefthand knife-guide having a swinging arm 60 ide-brackets 42-42 boltedpivotally -attached thereto, said arm being formed with a guide slot 61 Withln which the guide-block 53 is confined to shde thus providing for a desirable and simpler change of, the cutting stroke, this being accomplished without the attachment or removal of guide brackets. Said arm is adapted to be swung into the desired position and for its securement has integrally formedv therewith the segment 62 apertured at 63--63 to receive a securing pin 64 litt-ing an aperture in the guide-bar, said segment apertures being arranged to secure the arm with the guideslot at an angle as shown in Fig. 5 to produce a shear stroke or vertically, as shown in Fig. 6 to guide the knife vertically. While the arm 60 is here shown attached to the knife guide it will be obvious that it might be secured directly on the frame. To clamp the work during the cutting operation the clamp-member 65 is arranged to slide vertically in suitable guide-ways in the u rights and normally is sustained in elevate position by means of the oppositely arranged springs 68 upon which the clamp ends rest. The clamp member is formed with clam) fingers 66 and at either end is provided with the depending straps 67 having on their lower ends the racks 68, the teeth 69 of said racks being arranged in mesh with the pinions 70 fixed on a clamp operating shaft 72 iournaled in the standards and operated to ower the clam onto the work in the manner now to be escribed.

Initially to lower the clamp 65 on to the work tosteady the pile and to expel the air from between the sheets preparatory to applying the heavy clamping pressure thereon, I employ mechanisms particularly designed quickly to lower the clam before the knife cuts and not to release t e work until the knife is well on its u stroke thus to avoid the rippling or distur ing of the pile by the rising knife. To this end a double cam 75 is secured on the drive shaft 16, said cam being formed with the reversely acting cam surfaces 76-77. These cam surfaces engage respectively with the rollers 7 9-80 carried on lever 82 fulcrumed on front cross rod 3, and said surfaces are each formed with ab rupt riser portions 76-77 whereby said lever is rocked forwardly and rearwardly to lower and raise theclamp with a comparatively quick movement. On starting the machine the cam 75 will be rotated in the direction of the arrow and approximately during its first quarter rotation the roller 79 will ride up the riser portion 76 to the higher level of cam surface 76 whereby the lever will be oscillated forwardl to lower the clamp through the medium o a friction case 85, to which it is connected by the link 86, the. link as shown being connected to the arm at one en'd and to the integral arm 87 of the friction case at its other end. During the next half revolution of the cam the roller 80 will ride on the higher level of the cam surface 76 which however is slightly eccentric to impart a slight further movement to the friction case to maintain. the

friction until the last quarter rotation of the cam when the reverse riser portion 77 by its engagement with roller 80, will oscillate, the lever82 rearwardly as the said roller rides up to the higher level ofthe cani surface77 whereby the clamp is permitted to rise and the parts are returned to their initial position as shown. Thus the clamp will be lowered uickly onto the workv before the knife has a c ance to operate and a constant pressure will be maintained on the work approximately until the last quarter rotation of the. drive-shaft when the knife operated by a crank motion will be well up on its return stroke thereby preventin the ripplin of the sheets by the rising knife.

The riction case 85 is journaled on a hub 88 loosely mounted on rock4 shaft 90 journaled in the standards, said case having a split ring 91 secured therein,the internal surface of which is leather or liber lined as indicated' at 93, frictionally to engage the pcfl ripheral surfaceof pulley 95 keyed to the i hub 88. Said hub 88 has integrally formed f therewith a lug-arm 96 arranged to engage an opposing lug 98 on the segmental gear:

100, said gear 100 meshing with pinion 70 of the clamp shaft 72 whereby t-he same is operated. The split-ring 91 is shown secured within the case against rotation relative to the case, by the key-piece 102 re tained within a socket formed in the case.

As shown in Fig. 3 provision is made fori the adjustment of the friction and consists of .a clamping bolt 103 passing through the split ring enlarged ends to confine the tension spring 104 suitably interposed between the one ring enlarged end and the retaining nut 106- on the boltend.

` From the foregoing it will be seen that upon oscillation of the friction case in the direction for pulling down the clamp, said l case through its frictional contact with the f pulley 95 will cause the raising of the lugf stop-lug 107 on the standard 1 to again slipv the frictiony returning the parts to their initial position. Thus the clamp is firmly held onto the work` when the resistance of the latter overcomes the friction within the case until the form of the cam causes the return movement lof the case when the clamp will be permitted to rise,i said cam as aforesaid is so formed that the release of the clamp is not permitted until the knife has been elevated beyond danger of disturbing.

ated by the conical shifting-collar 110 which is slida'blyl mounted on the power-shaft 18 to expand the usual inner clutch mechanism indicated at 112 into engagement with the usual outer pulley member 114 thereof journaled on the power-shaft and which derives the operating power for the machine from the power-belt 116. The usual manually operated starting levers 120 are secured on the ends of the rock shaft 121 at the front of the machine, said rock shaft 121, for the purpose of connecting and disconnecting the driving power, is connected from short arm 123 'fixed thereon by link 124 to arm 125 of rearwardly extending rock-shaft 126 having secured on its near end the usual shiftingyoke 128 for the collar 110 whereby it is shifted by .manipulation of the starting ilevers to expand the inner clutch member 112 into and out of clutching engagement .with the outer pulley driven member 114. Automatically to shift the collar 110 so as to disconnect the power after the completion of each cutting stroke or cycle a throw-out cam 130 is desirably secured on the driving gear 24 and in its path of travel a roller 132 carried on the end of sliding rod 133 is arranged, said rod at its other end being connected to depending arm 134 fixed on the rock-shaft 126. Thus the engagement of the cam 130 with the roller 132, which isr timed to occur at the end of the stroke, will operate to rock the rock-shaft 126 to disconnect the clutch, and stop the machine.

In operation the normal speed at which the machine is run will carry the throw out.- cam slightly past the roller before the parts come to a stop, so that the clutch can be thrown in again when it is desired to start the machine. -If however the machine should run slower than the normal, owing either to a fluctuation in speed of the driving means 'or to an eXtra heavy cut, the machine would run until the cam forced the roller out, disconnecting the clutch, but' might not have enough momentum to carry the cam past the roller 132 on rod 133 which would then oppose the movement of said rod to throw in the clutch for starting the machine. It would then be necessary to move the cam from its interposed position to permit of throwing in of the clutch, which I have accomplished by formin the throw out cam 130 on a segment 136 fu crumed at 137 in the drive-wheel 24 and permitted to be swung within the limits of the slot 139 formed therein to which is fitted a bolt 140 fitted to t-he drive-wheel. The cam segment is provided with aforwardly extending operating handle 142- by which it may be swung from extreme rearward position against the tension of the retaimng sprlng 144 so as to move the cam forward from its position opposite the roller to permit of the clutch being thrown in. (Shown dotted. 1n Fig. 18.) The spring is fitted to the sp1-mg pin 146 pivoted to the segment at 147 v and is coniiied between the pin collar 148 and the slotted spring lug 150 on the drivewheel, and actsv to ret-am the cam in normal rearward position and to return it when the arm is released by the operator. The throw out cam desirably is formed of sufficient width to be always in the path of shifter-roller 132 either in its normal'rearward position or when moved forward as shown in dotted lines in Fig. 18 thus positively to insure disengagement of the clutch at the end of each stroke whether or not the cam is held in normal rearward position under influence of spring 144. The releasing handle, however,

will necessarily pass from the operators reach on the rotation of the drive wheel and will be accessible only at the end,y of each stroke.

In Fig. 1 I have shown means whereby the clamp may be lowered manually by depression of a treadle 160 fulcrumed on .the rear cross-rod 3 and connected to rotate the clamp-shaft on being depressed by producing aI leverage thereon by means of the chain 161. The chain is connected at its lower end to the treadle and at its upper end is carried by the chain-wheel 162 secured on the clamp-shaft, to which it is secured, to produce a leverage thereon in the direction to cause depression of the clamp, such depression being permitted independently ofthe automatically operating frictional clamp-lowering mechanism described, by the separation of the lug-arm 96 and segment-gear lug 98. For the purpose of producing the heavy clamping pressure on the work during the cutting operation I provide a pressure device operated by cam 165 011 the endof drive-shaft 16 to impart a rotatable pressure to the clamp-shaft 72 after the pile has been compacted by the lowering of the clamp as aforesaid preparatory to such pressure. The pressure device here shown consists of a pressure case 166 journaled on the end of clamp-shaft 72 andprovided with pawls 168 carried therein to engage with ratchets of a friction mecha- Y, nism incl'osed within the case whereby, when i oscillaied, it will operate to slip the friction of ysuch mechanism when the clamp and its actuating cam 165.

bears on the work with sufficient ressure. The pressure case 166 is retarde in this operative movement bythe action of the weight 170 integral therewith. The purpose for thus ret-ardlng the case is to allow the jaw 172, fulcrumed on the case 173, first to operate the pawls, throwing them into engagement with the ratchets of the friction mechanism before movement is imparted to the case. This operation of the ]aw with reference to the case is caused by reason that the case is rotated therethrough; cam

gaged by the pawls 168 hung in the pressure case and operated by the jaw through short links 183. The return of the pressure case after each operation is caused by the action of the weight, the return movement thereof being governed by the adjustable stop rest- 185. As shown in Fig. 2 this stop rest is fulcrumed on the clamp-shaft and provided at its rear end with the rest lug 186 engaging the under portion of the pressure-case weight to form a supporttherefor. and at its forward end is provided with the latch handle-187 by which it is rocked to change the normal relation of the operating jaw As shown, the latch handle is pivoted on the stop rest at 188 and provided with pin 190 to engage notches 191 of a securing segment 192 thereb v to secure the restin position to cause a clamping pressure of a longer or shorter duration as desired to compact the piles to a greater'or less degree.

Another important feature of my invention contributing to the accurate cutting of a wide range of work is shown in Figs. 8 to 12, and consists of a gage G for the gaging of the pile, which is adjustable in both a horizontal and a vertical plane and is made desirably in three sections to permit of setting conveniently to cut small pamphlets, cards, etc. As shown the outer sections 200 are secured to the central section 200 to form the complete gage, securing bolts 202 fitted t-o the central section beinO provided to extend through the elongated slots 203 in the inner vertical fianges 204 of the outer sections whereby one 4or both of the outer sections may be moved laterally with relation to the central section as indicated in dotted l-ines Fig. 8 whereby a square `forwardly extending gage-fin ers 212 spaced to pass between the clampngers 66 and have their lower front edges received wit-hin the usual table-grooves 214. To compen-l sate for any irregularities in the relation of the gage-fingers to the knife the gage-plate 210 together with the gage is arranged to be swung in a horizontal plane and the gage sections are formed and mounted on the plate to permit the tilting 'of the fingers toward and away from the knife, such adjustment being necessary in the event of Dan improperly made knife or one sharpened so as not to give proper clearance or relief above the cutting edge.

The horizontal swinging of the' plate 210 is accomplished by the adjustment of the adjusting bolts 220, 220 fitted to the rear of the tongue 36, said tongue being a sliding fit to the table slot to be advanced and retracted by the cable 33. Said bolts (as best shown in Figs. 8 and 12,) are arranged to engage the opposite inner surfaces formed by a recess in the plate rear end, said plate bolts 222. The holes for being fulcrumed on the tongue by pin 221 at its forward end and secured thereon by the bolts 222 are somewhat larger than the body of the bolt to 'permit the gage plate to move cidewise relative to the tongue. By loosening bolts 222 and adjusting bolts 220-220 it is evident that the whole gage will swing on pin 221 so the face of the gage may be made parallel to the knife. 4

The gage sections are formed with the toe portions 225 adjacent to the fingers to provide for the tilting of thergage toward and from the knife as may be desired. This is effected by the locknuts 227-227 fitted to the threaded stud 229 on plate 210 which stud passes through the rear portion of the gage central section 200. The vertical ad' justment of the fingers ,is effected by the loosening .of lock-nuts 227 and the adjustment of lower lock or adjusting nut 227. The upper of the lock nuts 227 may desirably be apertured to receive a pin 230 to lock the gage in exact perpendicular relation to the table. Also the adjacent portions of the sect-ions may be apertured as at 232 for the reception of securing pins when in exact parallel alinement,

In Figs. 13 to 16 I have shown means conveni'ently to render the clamp highly efficient in its coperation with the knife in the cutting have formed my clamping clam of stock with projecting index tabs or other forms of irregular outline. It will be understood that 'the knife cutting edge must be offset to conform to the 'tab being cut and that if a perfectly straight clamp isu'sed the projecting tab portion tends to curl up by reason of there being no ressure applied directly on the tab up to t e cutting edge. Conveniently to avoid the ragged cutting of the tabs as caused by such curlingup, I element to have detachably secured thereto an auxiliary projectir clamping iece .to conform to the cutting geof the nife. In Figs. 13, 14 and 15 thls clamping piece 240 is shown formed to be secured to the front face of the 65 by countersunk screws 241 and is provlded with a spline 242 fitted to a recess 1n the clamp provided therefor, said detachable piece bein of a size to fill the space between the cIamp and offset portion 244 of the knife only. In Fig. 16 a bottom late is shown tted to the under portion o the clamp and has integrally formed therewith a projecting piece 240 so that the clamp will coincide to the form of the knife cutting edge. The bottom plate is secured on the clamp by the bolt 245 passin upwardly through the clamp and provi ed on its upper end with g the squared head shown. I have therefore provided a machine which in the first instance Will permit'of readily changing the stroke for special work and furthermore is adapted to adjustment for the accurate cutting of tabs and the like and also embodies a positively acting disengagig mechanism, operative at the end of each cycle or cutting movement, having an attendant provision for the convenient removal of interposed parts for restarting of the machine while maintaining them operative at all times.

Having described my invention I claim,-'

1. In a paper cutting machine the cornb- 110 nation with the frame, the knife and means to operate the knife, of a guide-block, engaging means between the knife and the block to guide the stroke of the knife and adjustable connections between the block and frame to permit the adjustment of the bloc-k in a plurality of positions to guide the knife at various angles.

2. In a aper cutting machine the combination Wit the frame, the knife and means to operate the knife, of a guide-block fulcrumed to the frame, engaging means between the knife and t-he block to guide the stroke of the knife and means to secure the block in a plurality of positions to guide the knife at various angle 3. In a paper cutting machine, the combination with the frame, the knife and means to operate the knife, of a guide-block fulcrumed to the frame and provided with a lio 30 1t 1n position, 'and guide brackets secured on slide in said slot to guidevt-he stroke ofthe knife and means to secure the lblock in a plurality of positions to guide the knife at 'means to operate the knife, of a uide-block fulcrumed to the frame and provided with a guide-slotI to ide the knife-stroke, a securing arm carried on said blockand having apertures therein for the adjustment of the block to dierent angles, a securing pin fitted to said apertures-andj to the frame and a projection on the knife stock fitted to the guide-slot to guide the stroke' of the knife.

5. In a pa er cutting machine the combination with t e frame, the knife and means to crate the knife, .of a guide element on the fiame, a guide element on the knife complemental to said frame guide to guide the knife stroke, adjustable connections between one of the guide-elements and itssupport to permit the adjustment of the said guideelement in a plurality of positions to guide the knife at various angles.

6. In a paper cutting machine the combination'with the frame, the knife-bar and the knife, of guide-wa bars secured to-thefront of the frame to guide the knife and maintain the bar to engage with the edges of the guide-wa bars, said guide-way bars being ldetachab e, permitting other guide-way bars for guiding the knife at be substituted.

7. In a aper cutting machine the combination with the knife and the clamp to cooperate with the knife, of a friction device suitably journaled, connections between said friction device and the clamp to lower the clamp when said device is rotated in one direction, a drive shaft, knife operating cranks on said shaft, a cam on said shaft, a clamp actuating Alever journaled adjacent to said shaft, rollers carried by said lever on opposite sides of the cam, said cam having. reversely operating cam surfaces to engage said rollers whereby said lever is oscillated and connections from said lever to the friction device whereby said device is rotated respectively to' lower the clamp avnd to return it to its initial position.-

8. In a aper cutting machine the coinbination with the knife and the clamp to cooperate therewith in the cutting operation, of an auxiliary clamping piece detachably a di ferent angle to secured on the clamp forwardlyto extend a portion ofthe front clamping edge of said 60- clamp immediately adjacent to the offset cuttiig edge of lmives'of irregular outline.

9. n a paper cutting machine, the combination with the knife and the clamp to coo erate with the knife in the cutting operation, of a detachable face plate fitted to the 4of irregular outline.

lower face Jof the clamp,means detachably to secure said-face plate in osition and a 4forward projection o-n said ace plate forwardly to extend a portion of the front clamping edge of said plate immediately adjacent to the offset cutting edge.of knives 10. In a paper cutting machine, the 'combination with the frame, the knife and means to operate the knife, of a table on the frame for the work, a work age slidably arran ed on the table to gage t e work,`said gage eing supported to ,permit of tilting with reference to the vertical and means to secure said gage in various positions.

11. In a paper cutting machine the combination with the frame, the knife and means to operate the knife, of a table on the frame yfor the work, a work gage slidably arranged on the table to gage the work, said gage'having. a toe portion upon which it is.

bination with the frame, the knife and means to operate the knife, of a table on the frame for the work, a work ga e arranged .to slide on the, table to gage te work, said table havin grooves formed therein, of forwardlv projecting fingers on the gage fitted `otal connection between the gage and guide whereby the gage is swung thereon, and means to securethe gage in various positions relative to said ide.

14. In a paper cutting machine, the combination with the frame, the knife and means to operate the knife, of a table on the frame for the work, a gage sup orting plate having opposite vertical side aces, a gage for the work on the table fitted to the supporting plate and provided with surfaces engaging the plate side faces to revent horizontal movement of the gage with reference to the plate, and means adjustably to secure the gageto the plate with reference to the vertical.

to sai grooves, said age having a toe por- 15. In a paper cutting machine, the comcrumed on said connections between the plate and the tongue to permit of horizontal movement of the' 16. In a paper cutting machine, .the com.

bination with the knife and a driving member therefor, of means to connect said driving member to star-t the machine, a shiftable element for disconnecting said driving member, a driven part, an actuating element carried by said driven part to engage and shift said first element automatically to discon` nect the driving member at the end of each cycle of the knife, one of said engaging elements being yieldingly supported so as to permit movement from engagement with .the other part and means to limit the movement of said elementso as to be operative in all positions. c

17. In a paper ycutting machine, the combination with the knife and a driving member therefor;of'means.to connect and disconnect saidjdiiiving member to start and stop the machinaconnections automatically to disconnect the driving vmember at the end of each stroke of the knife, a driven part, an actuatingcamfor said connections fulpart to permit swinging forwardly from engagement with said connections, means to limit the swing of said cam so as to operative in all positions and a retaining spring normally to retain said element in rearward position.

18. In a papercutting machine, the combination with a knifeand a driving member therefor, dfa rock'shaftmeans operated from said rock shaft to connect and disconnect said driving memberl to start and'stop the machine, a rod connected to said rock shaft whereby saidshaft is rocked by the reciprocation of said rod, .a driven part, an actuating cam for'said rod fulcrumed on said part, a roller on the rod in the of said cam, means to limit the swin of said cam so .as to be in the path of the roller pathin 'all positions, a handle forwardly extending from the cam and a retaining spring normally to retain said cam in rearward position.

19. In a paper cutting machine, the combination with the knife and a driving mem# ber therefor, of a rock shaft, means operated from said rock shaft to connect and disconnect said driving member,a rod connected to said rock shaft, a driven part, a cam segment pivotally carried on saidi part, an'

actuating cam for the rod carried on said segment, said segment being .provided with a guide slot, a pin on the driven part fitted to said slot to limit the swing of the segl ment, a forwardly extending handle carried by the segment, a spring retaining lug on the driven part, a spring pin fulcrumed on the a retaining spring on said pin operative normally 'to retain the segment and cam in rearward position.

20. In a paper cutting machine, the combination with the frame, the knife and meansl to operate the knife, of a table on the frame for the work, a plurality ofgage sections arranged on gagefor the Work and to permit of tilting with reference to the vertical, said sections being slidably keyed to each other to be tilted in unison and to permit of relative longitudinal movement and means to secure the sections in adjusted position.

21. In a paper cutting machine the combination with the frame, the kni e-bar and NIEL GRAY, JR.

Witnesses:

JAS. P. KANE, PATRICK J. CLANGY.

the table to form a 

